Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7347462 | Door handle assembly including auxiliary bearing and auxiliary bearing support for a door handle A door handle assembly includes a door handle having an operator portion, and a shank extending from the operator portion. A mounting plate has a first bearing, the first bearing being sized to receive the shank of the door handle. An auxiliary bearing assembly incl... | 03/25/2008 |
| 7293807 | Door handle assembly A door handle assembly having a latch bolt mechanism and a retaining mechanism positioned within a housing. A shaft having a lever handle is positioned within a through hole in the latch bolt mechanism. The lever handle can be rotated in a first direction from a fir... | 11/13/2007 |
| 7281401 | Protective sleeve for latch mechanism for lock A protective sleeve for a lock includes a circumferential wall delimiting a longitudinal through-hole. The circumferential wall includes at least one longitudinal slot, forming at least one shielding skirt for shielding a housing of a latch mechanism of a lock that ... | 10/16/2007 |
| 7188873 | Door handle system A convertible door handle system that can be converted for a different handing or operating direction, or converted between handle-high and handle low, or converted between operating and non-operating is disclosed. A method for converting the functional configuratio... | 03/13/2007 |
| 7178842 | Push button lock mechanism for a handle set A handle set includes a handle assembly having an operator, a rose insert, and a shank having a bore. The rose insert has a central opening and a post. The shank is affixed to the operator and rotatably received in the central opening. A rotational stop is coupled t... | 02/20/2007 |
| 7137657 | Reinforced apparatus for a lever handle of a door lock A reinforced apparatus for a lever handle of a door lock comprises a housing having a first bottom plate and a second bottom plate, in which the first bottom plate connects a first annular wall and a second annular wall, and the second bottom plate connects the seco... | 11/21/2006 |
| 7077437 | Mortise lock integrated trim assembly with a retracting spindle An integrated mortise lock trim mechanism is provided for mounting on the surface of a door and has a handle turning a spindle that extends into the door to operate a lock mechanism mounted therein. The trim assembly is pre-assembled and has a retracting spindle tha... | 07/18/2006 |
| 7066507 | Post-removable construction of a door lock device A post-removable construction of a door lock device which is disposed on a plate assembly. The plate assembly can be applied to install a transmission mechanism comprised of an inner spindle, an outer spindle, an inner lever, and outer lever and a latch-retracting m... | 06/27/2006 |
| 7044513 | Weather resistant latch handle assembly A weather resistant latch handle assembly including a pan having sidewalls with an opening from an interior side of the pan to an exterior side of the pan, a pan floor, and a recessed area defined by the sidewalls and the floor. Bushings are carried in the openings ... | 05/16/2006 |
| 6938445 | Mortise lock status indicator A conventional mortise lock is provided with a visual status indicator to show whether the room is occupied or vacant. The mortise lock output, which operates the deadbolt, is used to linearly move an indicator slide positioned on the outside of the door by a rotati... | 09/06/2005 |
| 6921116 | Door handle assembly A door handle assembly includes a bias mechanism that maintains inside and outer handles in a generally horizontal position in which a latching bolt of a latching bolt mechanism is fully extended, the latching bolt being retracted upon rotating either handle only ab... | 07/26/2005 |
| 6698260 | Interiorly reinforced door lock set A door lock set includes: an outer lock held in an outer trim plate on an outside surface of a door, a latch device for locking the door on a door frame, an inner reinforced retaining member fastened with the outer lock and retained on an inside surface o... | 03/02/2004 |
| 6681605 | Tubular doorknob with adjustment devices for firmly mounting the tubular doorknob in a door A tubular doorknob includes an inside bracket, an outside bracket and adjustment devices. The outside bracket has two connecting wings, two outside passages, two outside screw holes and an outside adjustment device. The connecting wings protrude from diam... | 01/27/2004 |
| 6471262 | Device for locking a moveable part that is fitted onto a motor vehicle The invention relates to a device for locking a part (3; 21; 31) that is to be secured, arranged so that it can move on a motor vehicle, a securing part (11; 26; 36) engaging in a slot-shaped cavity (7; 28; 38) of the part (3; 21; 31) that is to be secure... | 10/29/2002 |
| 6062616 | Door handles A door handle assembly (10) includes at least one face plate (11) arranged to be secured to the face of a door, and a handle (12) adapted to be mounted on the face plate to be axially rotatable thereto. The handle includes a shank (17) that extends throug... | 05/16/2000 |
| 6038894 | Door lock A door lock has a first handle, a second handle, and a lock device disposed between the first handle and the second handle. The lock device has a disk disposed on the second handle, an annular cover disposed on the first handle, a sleeve disposed on the d... | 03/21/2000 |
| 5983683 | Adapter device for a key-in-lever type lock An adapter device for a key-in-lever type lock having at least a mounting plate and an escutcheon includes a disk having a central hole defined therethrough so as to receive screw posts, and a split spindle extending from the mounting plate, the disk havi... | 11/16/1999 |
| 5887465 | Torsion spring positioning means of a cylindrical lock A torsion spring positioning device of a cylindrical lock includes a spindle outer casing through which a spindle extends and the spindle outer casing has two protrusions extending radially inward from an inner periphery thereof. The spindle has two slots... | 03/30/1999 |
| 5882053 | Vehicle door/tailgate assembly with centering feature A vehicle door/tailgate handle assembly for unlatching either a combined door/tailgate and window as a unit or the window unit alone provides an improved centering/alignment feature which avoids reliance on prior known spirally wrapped, low tolerance, low... | 03/16/1999 |
| 5845522 | Fastening arrangement for a cylindrical lock A fastening device used with a lock for firmly securing the lock in position against undesired rotational movement with respect to a door where the lock is mounted. The fastening device comprises a pair of mounting screws for firmly securing an inside and... | 12/08/1998 |
| 5820178 | Spring retainer for lock mechanism A retainer for preventing abrasion of a lock spindle of a lock mechanism by a torsion spring used to return the lock assembly the center position. The lock mechanism includes an axial spindle operably connected to the knob and the lock bolt for selective ... | 10/13/1998 |
| 5727406 | Lever assembly for high torque load A lever assembly for a door lock comprising a lock cylinder and a pair of housings, each of which being mounted to a respective shank portion of the lock cylinder. Each housing has a circular channel formed in one side thereof. Each housing defines a lip ... | 03/17/1998 |
| 5685182 | Door handle-mounted eurocylinder-type assembly for electronic lock and key system A handle-operated lock and latch assembly for interfacing a Eurocylinder type of electronic lock with a rose-accessible door lock/latch mechanism employs a handle of the type used in a mechanical handle-actuated door latch, but in which the shank portion ... | 11/11/1997 |
| 5590555 | Anti-rotation mechanism for lockset chassis A lockset chassis assembly is provided for use with a door latch. The lockset chassis assembly includes a rotatable spindle, a chassis supporting the rotatable spindle, a rose engaging the chassis at a junction therebetween and defining a space between th... | 01/07/1997 |
| 5566996 | Method and apparatus for attachment of a door lock trim rose A system for attaching door lock trim roses on inside and outside faces of a door, has a mounting chassis with inside and outside members, each having outwardly projecting portions with opposed cylindrical sector arcs. Fasteners join the outside member to... | 10/22/1996 |
| 5441318 | Lever operated door lock assembly A lever door lockset 20 includes an exterior subassembly 21 and an interior subassembly 55. Interior subassembly 55 includes a lever 56 positioned on an insert 62 which supports a rose insert 64. A half-round spindle 78 and a round spindle 80 are position... | 08/15/1995 |
| 5433495 | Two-way door latch A two-way door latch that is swingable relative to a door jamb, the door having an opening adjacent its edge whose opposing ends are covered by a pair of escutcheons. Rotatably mounted on each escutcheon is a knob having a short shaft that extends into th... | 07/18/1995 |
| 5385374 | Reinforced cylindrical door lock set A cylindrical door lock set includes inner and outer knob supporting plates, a turning mechanism, an annular mounting plate and a latch unit. The outer knob supporting plate has a central hole and an inner side provided with a pair of posts on two sides o... | 01/31/1995 |
| 5335950 | Door lockset with spindle bearing A lockset 20 includes an interior knob 24 mounted on an insert 26 and an exterior knob 62 mounted on an insert 64. A rose liner 30 and a cover 58 are mounted on the insert and provide a spaced bearing support for an interior assembly including knob 24. A ... | 08/09/1994 |
| 5316355 | Integral door knob assembly with spring return An integral door knob assembly for mounting on a face of a door has a spring return so that the door knob rotates to one position when released. A shank formed integral with or attached to the door knob is formed of plastic material eliminating the requir... | 05/31/1994 |
| 5084940 | Adjustable handleset An entrance handleset 20 is assembled on a door 22 and includes a handle 24 which is connected at an upper end to an upper rose 26 and at a lower end to a lower rose 28. A thumbpiece 30 extends from upper rose 26 just above the upper end of handle 24 to f... | 02/04/1992 |
| 5067758 | Lock handle assembly with limited angular movement In a lock handle assembly, a lever handle has a rotary shaft to actuate a deadbolt which latches a door. The angular movement of the lever handle is limited by a mechanism including a rotary plate having radially projecting engaging members and mounted on... | 11/26/1991 |
| 4877278 | Retainer for door handle A shaft of a door handle to be installed in a door includes a limited length threaded segment for engaging a commensurately threaded rose to effect penetration and subsequent threaded disengagement therebetween. The threaded disengagement permits relative... | 10/31/1989 |
| 4854616 | Door latch assembly with see-through capabilities A door latch assembly for a door in which the latch assembly has a member which is transparent or translucent to allow light to pass therethrough and being operable to support a door knob structure.... | 08/08/1989 |
| 4840414 | Grease fitting for dog A dog for latching a watertight door in the bulkhead of a ship, has a lubricant passage with a plug useful for forcing a grease pellet into the passage. The plug extends beyond the end of the spindle for the user to clamp a wrench for removing the plug fr... | 06/20/1989 |
| 4626008 | Door lock apparatus A locking prevention apparatus for attachment to the locking shaft of a passage lock door knob assembly for an interior door consists of a split ring of substantially rigid material which engages circumferentially the external surface of the locking shaft... | 12/02/1986 |
| 4604879 | Cylindrical lock A cylindrical lock on a door panel has an outside actuating lever and an outside nut. Torque from both the nut and the outside lever is transferred to a substantially planar torque plate engaging the door panel and having a central opening bounded by arcu... | 08/12/1986 |
| 4460204 | Door handle assembly having a mechanism for preventing inadvertent loosening of the handle In a door handle assembly (1), by which a door handle (2) is journalled through a ball bearing (5) with respect to a mounting plate (8) secured on a door (10), the inner race (6) of the ball bearing being secured in the inner end of the door handle (2), t... | 07/17/1984 |
| 4405164 | Rattle-free door latch A door latch assembly in which thrust roller bearings are placed between the handles and escutcheons and axially loaded to eliminate all axial play of the handles relative to the escutcheons.... | 09/20/1983 |
| 4343502 | Doorknob construction A method of retaining Mortise Lock knobs and levers wherein a threaded male journal is provided on the knob or lever which co-acts with a female threaded nut whose outer diameter becomes a journal bearing surface permitting rotation of the knob or lever. ... | 08/10/1982 |
